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2008-12-30, 14:12   #2
Flatlander
I quite division it

"Chris"
Feb 2005
England

207710 Posts

Quote:
 Originally Posted by gd_barnes With the primes just pouring in at top-5000 as a result of PrimeGrid running an effort on the Proth side similar to what we are currently for k<1200 and at lower n-ranges, it looks like n=350K will be at n=350K by Jan. 5th or earlier. Since people reserved and divided up their ranges on their cores assuming a Jan. 15th completion date, we'll stick with our plans here but I'll put another quad on it starting later today or on Weds that will boost the reserved ranges to P=~7T. On Jan. 5th, my 1st 2 quads will finish and I'll be able to do another P=1.6T range by Jan. 15th. That would put it at P=8.6T so we'd likely just need a few more smaller reservations to get us where we need to be. The drive will still be n=350K-500K but the first few primes may be non-top-5000. I'm now estimating that the 5000th prime will be at n=351K by the time we start. As if we hadn't done so already, PrimeGrid has demonstrated conclusively that our method of searching for primes is the wave of the future! Gary
I think having an efficient sieve is more important than missing out on a few reportable primes.

(I'm more worried about my dozens of top-5000 primes that will be pushed out soon.)

edit:

But why not start a drive for 350-352k now, and get them registered?

My reservation will finish late 01/01/09 GMT. (Looks like >20,000 factors.)

Last fiddled with by Flatlander on 2008-12-30 at 14:34